Sand pump



C. A. BUTLER SAND PUMP Sept. 28, 1954 I 2 Sheets-Sheet 1 Filed March 31, 1952 INVENTOR CZycZQ ZBuZZer ATTORNEY$ C. A. BUTLER SAND PUMP 2 Sheets-Sheet 2 Filed March 31, 1952 a; Allllllull .&w I! I I|-... J-il I211 i? 4 n 0 m a w 4 I L 4 3 4 I 1v 4 6 4 L! l A 1 5 mm! 2 a 9 0 /6 5 6 5 2 0 z 1 w z 2 W W 3 x3 xx 5 x 5% E d 3 i z 4 4 2 6 5 a 5 Z 9 8 2 4 INVENTOR 49 C'Zy de JZB uZ Zer I I I ATTORNEYS Patented Sept. 28, 1954 SAND PUMP Clyde A. Butler, Columbu Iron Works, Inc., 001

corporation Application March 31, 1952,

2 Claims.

This invention relates tosand pumps and is an improvement over the construction shown in my prior Patent 2,110,079, issued August 18, 1937, for Sand Pumps.

In a sand pump, particularly of the centrifugal type, the abrasive action of the sand wears through the walls of the pump, and unless a telltale means is provided to give warning when the walls have been punctured or cut through, the pump may be completely ruined. It is, therefore, an object of this invention to provide in a centrifugal pump means whereby a leakage in the liner may be readily detected.

Another object of this invention is to provide a centrifugal pump embodying a skeleton-like outer shell with a liner disposed loosely within the shell, so that any break-through of the liner can be immediately detected.

A further object of this invention is to provide an improved sealing means between the liner and the other components of the housing which will seal the several components together, and at the same time provide a means whereby a breakthrough in the inner portion of the liner may find an outlet through the seal without damaging the outer shell components.

A further object of this invention is to provide in a pump of this kind means whereby water may be circulated within the pump structure so as to Wash out any sand which may cut into the housing components, the impeller, or the shaft and bearings.

A further object of this invention is to provide a pump structure which is so constructed and arranged that the liner may be easily and quickly replaced.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more par ticularly pointed out in the appended claims.

In the drawings:

Figure 1 is a detailed side elevation of a sand pump constructed according to an embodiment of this invention.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 1.

Figure 4 is a fragmentary sectional view taken on the line 44 of Figure 1.

Referring to the drawings, the numeral l designates generally an outer housing or shell which is formed of complementary skeleton-like housing members II and 12, which are of substantially s, Ga., assignor to Pekor umbus, Ga., a domestic Serial No. 279,518

circular form and are provided at the lower portion thereof with an outlet neck IS.

The housing I0 is formed of a plurality of circumferentially arranged cutouts 14 providing spaced housing members l5, which are connected together at their inner ends by an annular flange A pair of base plates H are carried by each shell member I l and I2 adjacent the lower portion thereof adapted to be secured to a suitable base structure whereby the housing I t is adapted to be disposed in an upright position.

A substantially ring shaped liner i8 is disposed within the housing It) and is formed with a neck I 9, projecting into the neck or outlet l3. The liner I8 opens inwardly and is adapted to seat in annular rabbets 23, which are formed in inner disc shaped liner plates 2! and 22. The liner plate 2| is formed with a nipple 23 extending into a nipple 24 carried by an outer disc-shaped plate 25, and the nipple 23 constitutes an intake means whereby sand and water is adapted to be drawn into the interior of the pump.

The outer plate 25 is formed with an annular flange 26 bearing against an outwardly projecting flange 27 carried by the liner plate 2 I and a space 28 is formed between the two plates 2| and 25. A cylindrical space 29 is also formed between the intake nipple 23 and the outer nipple 24. Liner plate 21 is formed with a plurality of openings 30 which communicate the space 28 with the impeller chamber 3!.

The annular flange I6 of the outer shell is interposed between the flange 26 and a flange 32, which is formed on the liner l8, and an annular gasket 33 is interposed between the flange l6 and the flanges 26 and 32. The gasket 33 is of U-shape in transverse section and provides a means whereby sand cutting through the fiange 32 may cut through the gasket 33 and finally break through the outer shell without efiecting any abrading action on the outer shell components.

An impeller 34 is rotatable disposed in the impeller chamber 3| and the opposite sides 35 and 36 of the impeller 34 are disposed in slight spaced relation to the inner faces of the liner plates 2| and 22, as indicated at 31 and 38, so that water circulating through the space 28 and. the openings 30 may circulate between the impeller plate 30 and the plate 2|, and thereby wash outany sand particles which may enter the space 31. The impeller 34 includes a hub 39 which is secured to a drive shaft 40, and the drive shaft 40 is journalled through a packing gland 4| carried by the hub or boss 42 of a second outer disc-shaped plate 43.

The plate 43 includes an outer annular flange 44 confronting the flange l6 of the shell I, and flange 44 bears against a flange 45 carried between liner plate 22. A rubber gasket 46, which is U- shaped in transverse section, is interposed between the flange 32 of liner H! and the flanges I6 and 44. The liner plates 2| and 22 and the outer shell plates 25 and 43 are tightly secured to the housing member it by means of a plurality of arcuate clamping bars 41 which are pivotally secured, as at 48, to outer plate 25 and extend through a space M to a point overlapping the outer flange 44 of outer plate 43.

Pressure screw or bolt 49 is threaded through the free end of clamping bar 47 and bears against flange 44, as shown in Figure 2. A bearing bushing 59 is disposed loosely about shaft is adjacent the outer end of hub 39, and a skeleton-like washer is also disposed loosely about shaft 49 and bears against the outer end of bearing ring 50.

There are a series of openings 52 at the inner portion of plate '22 so that water may flow from a water supply pipe 523 through a channel 54 formed in hub 32 into a central water chamber 5'5 and then flow outwardly in space 98, thereby keeping any sand particles from entering the bearing and gland of the pump. Water is supplied to space 29 from a water supply pipe 56, and the two pipes 53 and 59 are connected to a coupling 51 which is connected by a pipe 58 to a source of water pressure supply. Water for priming of the pump is conducted from fitting 51 through a valve 59 to a nipple 99 which extends through the outer shell It and is fixed within the upper portion of liner It, as shown in Figure 2.

A pipe 6| extends from a T-shaped fitting 62 at the upper end of pipe 53 downwardly into the boss 42, so as to provide water under pressure for the gland 4|, in order that the gland 4| will not be unduly cut by any sand which may creep outwardly along the shaft 49.

In the use and operation of the pump, the intake 23-24 is connected to a suction line, and the outlet I3 is connected to an exhaust line. Water is discharged from supply line 5% and pipes 53, 56 and ti into the chambers or spaces 28, 29, 31 and 33 so that as impeller 34 is rotated, any sand creeping between the impeller 34 and the liner plates 2| and 22 will be washed out.

After the pump has been in operation for a predetermined period, the abrasive action of the sand and other particles may cut through the liner l8 and when liner is is completely broken through by the abrasive action of the sand, the water and sand will. flow through the opening formed by the break-thror1gh of the sand in the space which is formed between the liner is and the shell is. The water and sand entering the space 53 may be readily detected in the cutout portions 14 of the shell so that when water is detected in the spaces or cutouts 14, the pump can be immediately stopped and a new liner inserted.

In the event the sand should cut through either or both flanges 32 of liner It, the sand may also cut through the gaskets 33 and 4B. lhe cutting through of the sand through the gaskets 33 and 45 will take place before the flanges Hi, 26 and 44 have been damaged. In this manner, it the sand should cut through either one or both of the gaskets 33 and 46, these gaskets may be replaced with the replacement of the liner I8.

The rabbets or channels 29 in the liner plates 2| and 22 provide a means whereby the outer liner l8 will be held concentrically of the impeller 34, and these channels or rabbets 20 will also provide a means whereby the liner and shell components may be tightly clamped together by the clamping members 41.

I do not mean to confine myself to the exact details of construction herein disclosed, but claim all variations falling within the purview of the appended claims.

What is claimed is:

1. In a sand pump, an outer substantially circular casing formed of complementary housing members, each member having spaced cutouts extending inwardly from the periphery thereof,

a circular liner in said casing, a pair of outer disc-shaped shell members having outer annular flanges confronting said housing members, a pair of inner disc-shaped liner plates, channeled gaskets encompassing the inner edges of said housing members, the inner edges of said housing members being of circular shape and interposed between said first named liner and the flanges of said shell members, and bowed clamping bars carried by one of said shell members engaging in the cutouts of said housing members and extending over said circular liner, the free end of each clamping bar confronting the flange of the other shell member, and a clamping screw threaded through the free end of each bar bearing against the flange of said other shell member for clamping said shell members, said housing members andsaid liners together.

In a sand pump, an outer casin formed of complementary housing members having spaced cutouts, a circular liner in said outer casing having portions thereof exposed through said cutcuts, a pair or outer dise shaped shell members, a-pair of inner disc-shaped liner members, said pair of liner members each having a rabbet within which said first named liner engages, the inner edges of said housing members being interposed between said first named liner and said shell members, sealing means between said housing members and said first named liner, means engaging in said cutouts clamping said shell members to said housing members and simultaneously clamping said housing members to said circular liner, there being a space between said shell members and said inner liner members, at least one of said inner liner members having openings therethroug-h, an impeller rotatable between said inner liner members, said impeller having opposite faces spaced -from said inner liner members, and means connecting said first named space with a water supply source for circulating water under pressure in said first named space and through said'opening into the space between said impeller and said inner liner members to wash sand particles from said latter named space.

References Cited in the file of this patent UNITED STATES PATENTS 

